CODEWITHSUNDEEP
javascriptstringreplace
Kuroki Kaze
Kuroki Kaze

Reputation: 8471

JavaScript multiple simultaneous replace

What is the simplest way in JS to replace multiple things in string at once (without them interfering)? Like

"tar pit".replaceArray(['tar', 'pit'], ['capitol', 'house']);

...so it produces "capitol house", not "cahouseol house"?

Upvotes: 4

Views: 709

Answers (2)

Moazzam Khan
Moazzam Khan

Reputation: 3170

how about this - 

function replaceArray(text, toBeReplacedArray, replacementArray) {
    for (var i = 0; i < toBeReplacedArray.length; i++) {
        var re = new RegExp(toBeReplacedArray[i], 'g');
        text = text.replace(re, '__' + i + '__');

    }

    for (var i = 0; i < replacementArray.length; i++) {
        var re = new RegExp('__' + i + '__', 'g');
        text = text.replace(re, replacementArray[i]);
    }
    return text;
}

replaceArray("tar pit", ['tar', 'pit'], ['capitol', 'house']);

Upvotes: 2

Yury Tarabanko
Yury Tarabanko

Reputation: 45121

var replaceArray = function(str, from, to) {
   var obj = {}, regex;
   from.forEach(function(item, idx){obj[item] = to[idx];});

   regex = new RegExp('(' + from.join('|') + ')', 'g');
   return str.replace(regex, function(match){return obj[match]});
}

replaceArray("tar pit", ["tar", "pit"], ["capitol", "house"]);

Upvotes: 6

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